At least they document the changes, I don't know if libdnet ever merged those back, it might be worth looking at that.
I just had a quick look and it appears that all/most of the changes are not included in libdnet-1.11.
I don't think there is any way we can fix this currently. The modifications made in the nmap version include some fixes and a patch that adds support for SCTP. Nmap won't compile against a libdnet which doesn't have this patch, and it's not included in the upstream version (yet).
What I found out about disentangling the bundled libs so far:
1) libdnet-stripped is hard-coded in various C headers and elsewhere
2) dev-libs/libdnet-1.12 supports SCTP, so we should be able to fairly easily switch, if it
weren't for 1).
3) liblinear is not in the tree
4) autotools changes are difficult (e.g. )
I made some initial progress but then I got tired and threw away my work in disgust. This isn't going to be easy.
 CHANGELOG:Cleaned up the libpcre build system a bit by removing Makefile.am
any news about this? this seems to block nmap 6.40 which is out since 29-Jul-2013
(In reply to puchu from comment #4)
> any news about this? this seems to block nmap 6.40 which is out since
>=dev-lang/lua-5.2 is still package.masked.
The bug has been referenced in the following commit(s):
Author: Marek Szuba <firstname.lastname@example.org>
AuthorDate: 2020-12-27 00:00:44 +0000
Commit: Marek Szuba <email@example.com>
CommitDate: 2020-12-27 00:05:32 +0000
net-analyzer/nmap: migrate to lua-single.eclass
The live ebuild, the latest release currently in the tree and the latest
release available under the GPL. In all three cases, upstream build
scripts require version 5.3 of Lua and while they do not use pkgconfig,
they check for versioned files/directories first.
IUSE=system-lua is still there but defaults to enabled now.
Signed-off-by: Marek Szuba <firstname.lastname@example.org>
net-analyzer/nmap/nmap-7.80-r2.ebuild | 137 ++++++++++++++++++++++++++++++++++
net-analyzer/nmap/nmap-7.91-r1.ebuild | 116 ++++++++++++++++++++++++++++
net-analyzer/nmap/nmap-9999.ebuild | 18 +++--
3 files changed, 266 insertions(+), 5 deletions(-)
nmap can now build against system Lua, all that remains to be done is to move its USE=system-lua mask from package.use.mask to package.use.stable.mask.